Skateboard attachment device



FIG. 1 is a perspective view of a skateboard attachment device according to the present invention;

FIG. 2 is a front side view of the skateboard attachment device illustrated in FIG. 1;

FIG. 3 is a rear side view of the skateboard attachment device illustrated in FIG. 1;

FIG. 4 is a side view of the skateboard attachment device illustrated in FIG. 1;

FIG. 5 is an opposite side view of the skateboard attachment device illustrated in FIG. 1;

FIG. 6 is a top view of the skateboard attachment device; and,

FIG. 7 is a bottom view of the skateboard attachment device. 

The ornamental design for a skateboard attachment device, as described and shown. 